Medical transfer bed

A medical transfer bed, comprising a vehicle body and a movable bed board mechanism (3) mounted on the vehicle body, wherein the movable bed board mechanism (3) comprises an upper-layer bed board (32), a driving roller (33), a conveyor cloth belt (35) and a mounting base (34);

• the upper-layer bed board (32) is detachably connected to the mounting base (34), and the driving roller (33) is rotatably connected to the mounting base (34);
• the conveyor cloth belt (35) is sleeved outside the driving roller (33) and the upper-layer bed board (32) and is tensioned by the driving roller (33) and the upper-layer bed board (32);
• wherein two ends of the driving roller (33) are detachably connected to a second driving mechanism (5) by means of a clutch mechanism (6) and are driven by the second driving mechanism (5) to rotate;
• a limiting piece used for limiting the driving roller (33) in a radial direction is arranged on the mounting base (34);
• and when the limiting piece and the driving roller (33) are misaligned, the driving roller (33) is capable of being arranged separately from the mounting base (34);
• wherein the clutch mechanism (6) comprises a first clutch shaft (61) connected to an end part of the driving roller (33), and a second clutch shaft (62) that penetrates through the mounting base (34) in an own axial direction and is slidably connected to the mounting base (34);
• wherein a third driving mechanism (7) used for driving the second clutch shaft (62) to slide is arranged on the vehicle body;
• the first clutch shaft (61) is coaxial with the second clutch shaft (62);
• connecting bumps (63) are respectively arranged at an end of the first clutch shaft (61) and an end of the second clutch shaft (62) opposite to the end of the first clutch shaft (61);
• and when the first clutch shaft (61) and the second clutch shaft (62) rotate synchronously, the connecting bump (63) of the first clutch shaft (61) is abutted against a side of the connecting bump (63) of the second clutch shaft (62), and the second driving mechanism (5) drives the second clutch shaft (62) to rotate.